The Nature Explorers Cibola Expedition Part 3 of 5

submitted by: thenatureexplorers

Located on the Arizona and California border along the southern Colorado River, the river provides an oasis in arid desert to the migrating birds flying south along the Pacific Flyway to Central and South America and is a habitat as well for many other animals such as feral donkeys, raccoons, lizards, chipmunks, and more.

The Nature Explorers Cibola Expedition Part 2 of 5

submitted by: thenatureexplorers

Located on the Arizona and California border along the southern Colorado River, the river provides an oasis in arid desert to the migrating birds flying south along the Pacific Flyway to Central and South America and is a habitat as well for many other animals such as feral donkeys, raccoons, lizards, chipmunks, and more.

The Nature Explorers Cibola Expedition Part 1 of 5

submitted by: thenatureexplorers

Located on the Arizona and California border along the southern Colorado River, the river provides an oasis in arid desert to the migrating birds flying south along the Pacific Flyway to Central and South America and is a habitat as well for many other animals such as feral donkeys, raccoons, lizards, chipmunks, and more.

Approaches to Evaluating and Improving Lithium-Ion Battery Safety

submitted by: RASEIBoulder
As lithium-ion battery technologies mature, the size and energy of these systems continues to increase for emerging applications in transportation, grid storage, military use and aerospace. In fact, broadening the application space for lithium-ion batteries from the consumer electronics industries to these emerging markets increases their size from 1-50 Wh batteries for smart phones and laptops to >50 kWh for electric vehicles (EVs) and MWh scale for utility storage systems. As these...

Making Most of the Absorbed Photon: New Insights into Carrier Multiplication in Semiconductor Nanostructures

submitted by: RASEIBoulder
Carrier multiplication (CM) or multiexciton generation (MEG) is a process whereby absorption of a single photon produces multiple electron-hole pairs (excitons). CM could benefit a number of solar-energy conversion technologies, most notably photocatalysis and photovoltaics. This presentation overviews recent progress in understanding of the CM process in semiconductor nanocrystals, motivated by an outstanding challenge in this field - the lack of capability to quickly discern between...

Endothelin-1 is a transcriptional target of p53 in epidermal keratinocytes and regulates UV induced melanocyte homeostasis

submitted by: arup.indra
Keratinocytes contribute to melanocyte activity by influencing their microenvironment, in part, through secretion of paracrine factors. Here we discovered that p53 directly regulates Edn1 expression in epidermal keratinocytes and controls UV-induced melanocyte homeostasis. Selective ablation of EDN1 in murine epidermis (EDN1ep-/-) does not alter melanocyte homeostasis in newborn skin but decreases dermal melanocytes in adult skin. Results showed that keratinocytic EDN1 in a non-cell...
Authors: Daniel J. Coleman, Gitali Ganguli-Indra, Stephen Hyter, Arup Indra, Steven Ma, Gary F. Merrill, Masashi Yanagisawa